Overview
In the following article, I explained how to build an IIIF Image Server using an AWS serverless application.
This time, I register a relatively large image and verify whether tile image delivery is possible.
Target
This time, the target is "Mining Claim Maps" (held by the University of Tokyo Komaba Library).
The original image is a TIF file of nearly 300 MB.
Creating Pyramidal Tiled TIFF
Referencing the following site, I tried both VIPS and ImageMagick.
GitHubUsing VIPS
vips tiffsave source_image.tif output_image.tif --tile --pyramid --compression jpeg --tile-width 256 --tile-height 256
Using ImageMagick
convert source_image.tif -define tiff:tile-geometry=256x256 -compress jpeg 'ptif:output_image.tif'
As a result, the VIPS version was 35.6 MB and the ImageMagick version was 107.4 MB.
IIIF Image URLs
The respective IIIF image URLs are as follows.
VIPS
ImageMagick
Display in an Image Viewer
This time, I used Image Annotator (created by Masahide Kanzaki), which can load IIIF image URLs.
VIPS
ImageMagick
Results
In both cases above, the images were displayed successfully (though loading took some time in certain cases).
I hope these experimental results serve as a useful reference.
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